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galina1969 [7]
3 years ago
13

IMPORTANT PLEASE I NEED NOW:Find the area of each face of the cube whose volume is 729 cm

Mathematics
2 answers:
vivado [14]3 years ago
8 0

Answer:

81

Step-by-step explanation:

square root of 729= 9

9×9=81

Delvig [45]3 years ago
5 0

Answer:

Step-by-step explanation:

Formula of Volume= a^{3} - a = side

Therefore since the volume is given you just need to find the side.

729=a^{3} = \sqrt[3]{729} = a

            = 9 = a

Now you know that 9 is the side, so using that find the area of one face-

Area of a square= 9 x 9 = 81cm^{2}

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Evgen [1.6K]

Answer:

(B)r=\dfrac{85}{12}

Step-by-step explanation:

Given a circle centre J

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Theorem: The angle between a tangent and a radius is 90 degrees.

By the theorem above, Triangle JLK forms a right triangle with LJ as the hypotenuse.

Using Pythagoras Theorem:

(6+r)^2=r^2+11^2\\(6+r)(6+r)=r^2+121\\36+6r+6r+r^2=r^2+121\\12r=121-36\\12r=85\\r=\dfrac{85}{12}

The length of the radius, r=\dfrac{85}{12}

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Answer:

The Growth of sunflower duing 3 weeks is 8.5 inches or 8 (1/2).

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According to given data:

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Total growth is given by,

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